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dissatisfaction; discontent; disapproval; objection; complaint; protest; disagreement
判決に不服があれば控訴できます。
You can appeal if you object to the verdict.
その決定に不服を正式に申し立てた。
I formally filed an objection to that decision.
彼は処分に不服で上司に訴えたそうだ。
I heard he complained to his boss, objecting to the punishment.